This week we "celebrate" the second anniversary of the Flash Crash, as well as hear about trust between investors and brokers, mobile security, economic uncertainty and telephone IVRs. Wall Street & Technology keeps you in the loop by compiling some of the best quotes of the week.

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Happy Anniversary to everybody who made the Flash Crash happen. We hope you are enjoying yourself. Because we, and millions and millions of other retail and institutional investors around the world, are not.

— Sal Arnuk, an outspoken critic of high frequency trading and partner, co-founder and co-head of equity trading at Themis Trading, in a letter to clients.

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